New approach to the synthesis of dibenzodiazacrown ethers by ring transformation of dibenzocrown ether
作者:Svetlana N. Dmitrieva、Marina V. Churakova、Artem I. Vedernikov、Lyudmila G. Kuz’mina、Sergey P. Gromov
DOI:10.1016/j.tet.2011.02.038
日期:2011.4
macrocycle of 4′,4″(5″)-dinitrodibenzo-18-crown-6 ethers under the action of MeNH2 or MeONa to give podands was studied. Structure of the aza podands was confirmed by X-ray diffraction. A new approach to the synthesis of previously unknown dinitrodibenzodiazacrown ethers based on one-step ring transformation of the cis isomer of dinitrodibenzo-18-crown-6 ether on treatment with aliphatic diamines was proposed
研究了在MeNH 2或MeONa的作用下4',4″(5″)-二硝基二苯并-18-冠-6醚大环的开环,从而得到了单体。小号氮杂podands的tructure用X射线衍射证实。提出了一种基于脂肪族二胺处理的二硝基二苯并-18-冠-6醚的顺式异构体的一步式环转化的合成未知二硝基二苯并二氮杂冠醚的新方法。